Revealing the effect of LiOH on forming a SEI using a Co magnetic “probe”
Zhiqiang Zhao, Wanneng Ye, Fengling Zhang, Yuanyuan Pan, Zengqing Zhuo, Feihu Zou, Xu Xi-xiang, Xiancheng Sang, Weiqi Song, Yue Zhao, Hongsen Li, Kuikui Wang, Chunfu Lin, Han Hu, Qinghao Li, Wanli Yang, Qiang Li
Abstract
magnetometry. By combining comprehensive characterization and theoretical calculations, it is verified that LiOH leads to a composition transformation from lithium ethylene di-carbonate (LEDC) to lithium ethylene mono-carbonate (LEMC) in the SEI and ultimately results in capacity decay. This work unfolds the detailed SEI reaction scenario involving LiOH, provides new insights into the influence of SEI composition, and has value for the co-development between the electrode materials and electrolyte.
Topics & Concepts
ChemistryMaterials scienceAdvancements in Battery MaterialsAdvanced Battery Technologies ResearchAdvanced Battery Materials and Technologies